* {
  padding: 0px;
  margin: 0px;
}
main {
  width: 1900px;
  height: 900px;
  margin-top: 10px;
  overflow: hidden;
}
main aside {
  width: 250px;
  height: 900px;
  float: left;
  overflow: auto;
  border-right: #f3f3f3 solid;
}
main aside ul {
  list-style-type: none;
  display: inline-block;
  margin: 0 auto;
}
main aside ul li {
  width: 110px;
  height: 100px;
  border: solid 1px #f3f3f3;
  padding: auto;
  float: left;
}
main aside ul li img {
  max-width: 100px;
  max-height: 100px;
  min-height: 80px;
  min-width: 50px;
  aspect-ratio: true;
}
main article {
  width: 1640px;
  height: 900px;
  float: right;
  margin-right: auto;
}
main article .video_audio {
  height: 550px;
  overflow: hidden;
}
main article .video_audio .video {
  height: 540px;
  width: 960px;
  border: #f3f3f3 solid 1px;
  float: left;
}
main article .video_audio .video video {
  width: 960px;
  height: 540px;
  margin: auto;
}
main article .video_audio .audio {
  height: 540px;
  width: 660px;
  border: #f3f3f3 solid 1px;
  float: right;
  margin-right: 10px;
}
main article .video_audio .audio img {
  max-width: 100px;
  max-height: 100px;
  min-height: 80px;
  min-width: 50px;
  aspect-ratio: true;
  float: left;
}
main article .res {
  width: 1640px;
  height: 340px;
  border: #f3f3f3 solid 1px;
  overflow: auto;
  direction: ltr;
}
main article .res ul {
  list-style-type: none;
}
main article .res ul li {
  float: left;
  height: 330px;
  width: 330px;
  margin: auto;
  overflow: hidden;
}
main article .res ul li .res_img {
  width: 310px;
  height: 200px;
  float: left;
}
main article .res ul li .res_img img {
  max-width: 150px;
  max-height: 200px;
  min-height: 120px;
  min-width: 150px;
  aspect-ratio: true;
  margin: auto;
  border: solid #f3f3f3 1px;
}
main article .res ul li .res_img .img1 {
  float: left;
}
main article .res ul li .res_img .img2 {
  float: right;
}
main article .res ul li .res_sim {
  width: 310px;
  height: 130px;
  border: solid #f3f3f3 1px;
  float: left;
}
